//
// Created by zhou on 2021/10/31.
//
#include <iostream>
#include <vector>
using namespace std;
class Solution {
public:
    vector<vector<int>> matrixBlockSum(vector<vector<int>>& mat, int k) {
        int row=mat.size();
        int col=mat[0].size();
        vector<vector<int>> dp(row,vector<int>(col));

    }
};